Table 6.

Survival analysis base on GPA index in NSCLC patients with BM.

Variable	N	OS(median)	95%CI	P
	586	15.400	14.064–16.736
Traditional GPA1 scores				<0.001
Class A:0–1	160	10.633	8.939–12.327
Class B:1.5–2	211	16.267	14.196–18.337	<0.001
Class C:2.5–3	171	118.833	16.210–21.457	0.347
Class D:3.5–4	44	74.900	23.568–126.232	<0.001
Updated LNS2 based GPA scores				<0.001
Class A:0-1	220	10.933	8.174–13.693
Class B:1.5-2	204	12.967	10.660–15.273	0.047
Class C:2.5-3	128	24.167	19.276–29.057	<0.001
Class D:3.5-4	34	40.667	21.190–60.143	0.007

¹GPA, graded prognostic assessment; ²LNS, lymph node status.